San Francisco experienced its first-ever tornado warning early Saturday, stunning residents as a powerful storm swept through ...

A tornado warning issued for San Francisco and parts of San Mateo County was based on radar-indicated rotation.

Military scientists shredded millions of pages, impeding acknowledgement of the history of human radiation experiments.

The major windstorm overnight​ caused big problems in many parts of. City workers were overwhelmed by the amount of downed ...

A 2021 map showing how a tsunami could impact San Francisco was thrust back into the spotlight after a 2024 earthquake ...